Locking mechanism for awning type windows



Dec. 25, 1956 G. M. KLEINKNECHT LOCKING MECHANISM FOR AWNING TYPE wmoowsFiled Feb. 28, 1956- 2 Sheets-Sheet 1 A u 6% 4W 1% I 8 T? mi w mm KWM/ mm Z W e 4 Dec. 25, 1956 G. M. KLEINKNECHT 7 2,775,000

LOCKING MECHANISM FOR AWNING TYPE WINDOWS Filed Feb. 28, '1956- 2Sheets-Sheet 2 ATTORNEY Woodco Corporation, North. Bergen, N. 3., acorporation of New Jersey Application February 28,1956, s nal No.568,220

15 Claims.' or. 20-42 7 The invention relates to awning type windowshaving sliding and swinging sash members.

In sash structures of the typeunder consideration, a manually operablelocking lever or crank is located on the inside of the window frame tosecure the sashes against untoward efforts to pry them open from theoutside. One of the difiiculties encountered has been that it ispossible to move the locking lever, accidentally or otherwise, when thesashes are in open position, and as a result, when the operatingelements are moved to bring the sashes to closed position, the elementsof the lockingmechanism are not in a position to permit complete closingand locking of the sashes. If one is not conversant with therelationship of the concealed linkage and the locking elements, as isfrequently the situation, the window structure is considered out oforder or is damaged by attempts to close it.

In accordance with my invention, the foregoing difficulty is obviated bynovel means which functions to maintain the elements of the lockingmechanism in their proper relationship. By virtue of my construction,the locking lever cannot be moved, either purposely or accidentally, todisturb the proper relationship of the ele ments comprising the meansfor opening, closing and locking the sashes. Operation and securelocking of the sashes is assured at all times.

These, and other objects, advantages and results of the invention willbe brought out by the following description, taken in conjunction withthe accompanying drawings, in which:

Fig. l is an elevational view taken from the inside of a window framehaving awning type, vertically sliding and swinging window sashestherein, the sashes being shown in their fully closed and'lockedposition;

Fig. 2 is a vertical cross-sectional view taken approximately in theplane of line 22 of Fig. 1 showingthe novel locking mechanism of myinvention, the sashes being omitted for the purpose of clarity inillustration;

1 Fig. 3 is, a horizontal cross-sectional 'view taken approximately inthe plane of line 3-3 of Fig. 2;-

Fig. 4 is a view similar to Fig. 2, but showing the.

position of the sashes (shown in phantom) in their fully openedposition; and

Fig. '5 is a view similar to Fig. 4 showing the sashes in a partly openposition, just prior. to their being moved to the fully closed andlockedposition shownin Fig. 2.

'members 12 and 14 secured to a pair of horizontally extending spacedupper and lower frame members 16 and 18. In the embodiment illustrated,two (2) rectangularly shaped sashes 20 and 22 are shown within which areset the glass panes 24 and 26, respectively.

The sashes may be of wood or-metal, with the former preferred. Althoughtwo sashes are shown, it is within the ber of sashes may be used. 70.

posite or inside wall 30, the side walls being connected .by the basewall 32. The end of each side wall is'provided with a similar verticallyextending groove 34 to receive the tongue portion 36 of flexible moldingor weather-stripping 38, thereby assuring a secure weathertight fit ofthe sashes within the frame when the sashes are in fully closedposition. The wall 30 is provided with a vertically extending trackway40, which preferably is formed as an integral part of the extrudedchannel memher.

To actuate or move the sashes from opened to closed positions, andvice-versa, an actuating slide bar 42 is mounted within the channel 12for reciprocable movement in a vertical direction. The movement of theslide bar may be properly confined by means of spaced guide blocks (notshown) located within the trackway 40 and secured to the slide bar. Asash bracket 44, to which the sash 20 is fastened, is pivoted at one endto the lower end of the slide bar by means of a pin 46. A link 48 isprovided to support the sash bracket. The top end of the link ispivotally connected to the bracket by means of a pin 50 intermediate theends of the bracket. The lower end of the link is pivotally secured tothe channel 12 bya pivot pin 52. The link is provided with an obliquely,extending locking slot 54 near the end adjacent the sash bracket.

To lock the sash bracket 44 and its sash 20 in closed position, alocking bar 56 is mounted for reciprocable movement in a verticaldirection in the window frame channel 12. The locking bar is preferablyconfined for its up .and down movement by means of spaced guide blocks58 which ride in the trackway 40, one of such guide blocks being shownin Fig. 3. The upper end of the locking bar is located below the lowerend of the slide bar. Near the upper end of the locking bar, a lockingstud 60 is provided. The locking stud extends laterally from the lockingbar, and is preferably provided with a rotatable collar 62 at its end.The locking stud may also serve to secure the locking bar 56 to theguide block '58, as shown in Fig. 3. A manually operable locking leveror crank 64 is secured to the lower end of the locking barby a pin 66,the lever being pivoted for rotation about the axis provided by the linkpivot pin 52.

: tion, as shown in Fig. 4, the sash 20 is in its fully opened position.As the slide bar is moved upwardly, as to the position shown in Fig. 5,the sash is moved toward .closed position, and when the slide bar israised to its fullest height, as shown in Fig. 2, the sash is in fullyclosed position. .Any suitable operating mechanism may be provided'forimparting movement to the slide bar to open and close the sashes.

A conventional rack and pinion drive (not shown) may be used, themechanism being actuated by the crank 68 mounted on the window frame, asshown in Fig. 1.

It will be understood, of course, that any desired num- In theembodiment of the inyention illustrated, one other such sash 22 and theactuat- -,-ing elementstherefor being shown. 'The sash' 22 is secured toa sash bracket 70, one end of which is pivotally connected by a pin 72to the upper end of the slide bar 42. A second pin 73 connects the sashbracket to a slide bar guide block (not shown) located in the trackway40. The connection is of the floating type, there being a heart-shapedopening '74 to receive'the pins 72 and 73 for a purpose to besubsequently described. A link 76 for supporting the sash bracket 70 andsash 22 is pivotally connected to the bracket at its top end by a pin 78intermediate the ends of the bracket' At its lower end the link ispivotally connected to the channel 12 by' a pin 80.- The link isprovided with an obliquely extending locking slot 82 near the endadjacent the sash bracket, the slot being adapted to cooperate with alocking stud 84 secured to the slide bar and extending laterallytherefrom.

In the construction thus far described, the manually operable lockinglever 64 may be rotated from its uppermost position, as shown in Fig. 4,to its extreme lowermost position, as shown in Fig. 2, or to someintermediate position, even though the sashes are in fully opened orpartially opened position. Such movement of the locking lever may becaused by an inquisitive child, or accidentally by an adult. If thelocking lever is prematurely rotated, the locking stud 64 is moved in anupward direction so that when the operating crank 68 is turned to closethe sash or sashes, the locking stud 60 will not be in a position to bereceived within the locking slot 54 as the sash is about to be fullyclosed, as shown in Fig. 5. The nose portion of the link, designated 86,will then engage the locking stud and full closure of the sashes isprevented. Also, the link 76 cannot move to fully closed position toallow locking stud 84 to enter slot 82. The sashes cannot be locked,because they cannot be fully closed.

In order to prevent the foregoing from occurring, I have providedlocking stud positioning means, generally designated 88, associated withthe locking bar which normally acts to prevent movement of the lockinglever, thereby preventing movement of the locking bar and unduedisplacement of the locking stud 60, until the locking stud is receivedwithin the locking slot. The locking stud positioning means is rotatablymounted so that it is engageable by, and is responsive to the movementof, the link Only when the locking stud is received within the lockingslot, may the locking lever be moved, and at such time the operatinglinkage cannot be jammed. Means 88 is preferably a thin metal platepivotally mounted on the locking stud 60. The plate constitutes aholding means for the locking bar, and with it the locking lever, untilthe link providing the locking slot engages it to release the holdingmeans and allow movement of the locking bar.

In the preferred embodiment shown, the plate 88 is in the form of atoothed pawl or dog, and is provided with a series of teeth 90 on oneside and a laterally extending lug 92 on the other side. The plate isgenerally triangular in shape andis pivoted to rotate about the axisprovided by the stud 60. The geometry of the plate and the point atwhich it is pivotally mounted on the stud are such that the platenormally, or by gravity alone, has the teeth in engagement with anadjacent area of the frame channel 12. Any attempt to prematurely movethe locking lever 64 from its uppermost position,'as shown in Fig. 4,will cause the teeth to bite into the adjacent surface and preventmovement of the locking lever.- When, however, the slidebar is actuatedto bring the sashes to closed position, and the supporting link 48reaches the position shown in Fig. 5, the link engages the lug 92 andcauses the plate 88 to rotate. The teeth 90 move away from holdingposition so that the locking lever may then be moved or rotated towardlocking position." At this point, the locking stud 60 has alreadyentered the locking slot 54, so that rotation of the locking leverdownwardly or toward the position shown in Fig. 2, locks the sashes. Asthe locking lever is moved down, the locking bar' slides in an upwarddirection and causes the locking stud 60 to move up to the base of theslot 54, and the link 48 is cammed to upright position. The link beingconnected to the sash bracket 44, which in turn is connected to theslide bar 42, the slide bar is caused to move up an amount substantiallyequal to the effective vertical height of the slot 54. The heart-shapedopening 74 permits theresulting relative movement between the sashbracket 70 and the slide bar of the linkage, the pin 72 being thenseated at the lower end of the opening. It will be evident that theelements are so arranged that-the-sash 22 is also locked, because thelooking slot 82 of the link 76 has also passed over the locking stud 84.

To open the sashes, the locking lever is rotated from the position shownin Fig. 2 in an upward direction to the position shown in Fig. 5; Theslide bar 42 moves down and the locking studs ride out of theirrespective locking slots. As the link 48 swings out of the channel 12,the lug 92 is disengaged, permitting the plate 88 to rotate about itspivot so that-the teeth 90 now engage the adjacent area of the channelto prevent movement of the locking stud 60, the locking bar 56 andlocking lever 64. Turning the crank 68 swings the sashes toward morefully opened position.

The locking stud positioning or holding plate illustrated is a preferredform of the invention. It is within the purview of the invention toprovide a friction material, such as rubber, on the plate as the holdingmeans instead of the toothed structure. Also, instead of using the basewall 32 as the surface for cooperation with the holding portion of theplate, it is within the scope of the invention to-provide some othersurface for this purpose. This, however, would require an additionalelement, and it is preferred to simply use an adjacent area of thewindow channel frame.

While in the illustrated form of the invention, sash brackets areprovided for mounting of the sashes, itwill be understood that the sashmembers themselvesmay be used in the described linkages and the sashbrackets eliminated. It is preferred, however, to use intermediate sashbrackets because these may be of a light, weatherresistant material suchas aluminum, and the sash frames may be of wood. It will be understoodthat reference to a sash bracket in the claims is intended to includeeither a sash member directly connected to a supporting link, or a sashbracket having a sash member secured thereto as illustrated.

The invention has been described in connection with the drawings whichillustrate a window frame in which the slide bar and locking lever aremounted for movement in a vertical direction to swing the sash membersin a vertical plane, and reference is also made to upper and lower endsof some of the operating parts. Such indications of direction andlocation are merely convenient terms to best describe the invention inrelation to the orientation of the window frame and its operatingstructure as illustrated. It will be understood that the entire windowframe may be turned 90, if desired, so that the slide bar and lockingbar, instead of being moved in a vertical direction would be moveable ina horizontal plane or'from side to side, whereupon the sashes wouldcorrespondingly be opened and closed in a horizontal plane.

It is believedthat the advantages of the described improved awning typewindow and locking mechanism therefor Will be apparent from theforegoing detailed description It will also be apparent that while theinvention has been shown and described in its preferred form, changesmay be made without departing from the spirit and scope ofthe inventionas sought to be defined in the following claims.

I claim:

1. A window structure of the awning type comprising a window framechannel, a slide bar mounted in said channel for reciprocable movement,a sash bracket pivotally connected to said slidebar, a link pivotallyconnected at one end to said channel and at' the other end to said sashbracket, said link having a locking slot near the end adjacent said sashbracket, a locking bar mounted in said channel for reciprocablemovement, a locking stud provided near the upper end of said locking barfor cooperattion with said slot, a locking lever connected to the lowerend of said locking bar for imparting reciprocable movement to saidlocking bar, and means normally acting to prevent movement of thelocking lever and locking bar to thereby maintain said stud in positionto be received within said slot, saidmeans being engaged by said link asthe stud is received within the slot to allow movement of the lockinglever and locking bar to sash-locking position.

2. A window structure of the awning type comprising a window framechannel, a slide bar mounted in said channel for reciprocable movement,a sash bracket pivotally connected to said slide bar, a link pivotallyconnected at one end to said channel and at the other end to said sashbracket, said link having a locking slot near the end adjacent said sashbracket, a locking bar mounted in said channel for reciprocablemovement, a locking stud provided near the upper end of said locking barfor cooperation with said slot, a locking lever connected to the lowerend of said locking bar for imparting reciprocable movement to saidlocking bar, and holding means associated with said locking bar normallyacting to prevent movement of the locking lever and locking bar tothereby maintain said stud in position to be received within said slot,said holding means being engaged by said link as the stud is receivedwithin the slot to cause said holding means to move to a positionallowing movement of the locking lever and locking bar to sash-lockingposition.

3. A window structure of the awning type comprising a window framechannel, a slide bar mounted in said channel for reciprocable movement,a sash bracket pivotally connected to said slide bar, a link pivotallyconnected at one end to said channel and at the other end to said sashbracket, said link having a locking slot near the end adjacent said sashbracket, a locking bar mounted in said channel for reciprocablemovement, a locking stud 7 provided near the upper end of said lockingbar for cooperation with said slot, a locking lever connected to thelower end of said locking bar for imparting reciprocable movement tosaid locking bar, and a stud positioning plate rotatably mounted on saidlocking bar, said plate having a holding portion normally engaging anadjacent area of said channel to prevent movement of the locking leverand locking bar to thereby maintain said stud in position to be receivedwithin said slot, said plate having another portion engaged by said linkas the stud is received within the slot to cause said holding portion torotate to a position allowing movement of the locking lever and lockingbar to sash-locking position.

4. A window structure of the awning type comprising a window framechannel, a slide bar mounted in said channel for reciprocable movement,a sash bracket pivotally connected to said slide bar, a link pivotallyconnected at one end to said channel and at the other end to said sashbracket, said link having a locking slot near the end adjacent said sashbracket, a locking bar mounted in said channel for reciprocablemovement, a locking stud provided near the upper end of said locking barfor cooperation with said slot, a locking lever connected to the lowerend of said locking bar for imparting reciprocable movement to saidlocking bar, and a stud positioning plate, said plate having a holdingportion on one side and a link-engaging portion on the other, said platebeing so shaped and pivoted on said stud that the holding portionnormally engages an adjacent area of said channel to prevent movement ofthe locking lever and locking bar to thereby maintain said stud inposition to be received within said slot, engagement of the link withsaid linkengaging portion causing said holding portion to rotate to aposition allowing movement of the locking lever and locking bar tosash-locking position.

5. A window structure of the awning type comprising a window framechannel, a slide bar mounted in said channel for reciprocable movement,a sash bracket pivotally connected to said slide bar, a link pivotally.connected at one end to said channel and at the other end to said sashbracket, said link having a locking slot near the end adjacent said sashbracket, a locking bar mounted in said channel for reciprocablemovement, a locking stud provided near the upper end of said locking barfor cooperation with said slot, a locking lever connected to the lowerend of said locking bar for imparting reciprocable movement to saidlocking bar, and a stud positioning plate, said plate having a toothedportion on one side and a laterally extending lug on the other, saidplate being so shaped and pivoted on said stud that the toothedlportionnormally engages an adjacent area of said channel to preventmovement ofthe locking lever and locking bar to thereby maintain said stud inposition to be received within said slot, engagement of the link withsaid lug causing said toothed portion to rotate to a position allowingmovement of the locking lever and locking bar to sash-locking position.a r

6. A window structure of the awning type comprising a window framechannel, a trackway formed within said channel and extending along thelength thereof, a slide bar mounted for reciprocable movement along saidtrackway, a sash bracket pivotally connected at one end :to said slidebar, a link pivotally connected at one end to said channel and at theother end to said sash bracket,

said link having a locking slot near the end adjacent said sash bracket,a locking bar mounted for reciprocable movement along said trackway, theupper end of the locking bar being located below the lower end of saidslide bar, a locking stud provided near the upper end of said lockingbar, a locking lever pivotally connectedto said channel and secured tothe lower end of said locking bar for imparting reciprocable movement tothe locking bar, and means normally acting to prevent movement of'thelocking lever and locking bar to thereby maintain said stud in positionto be received within said slot, said means being engaged by said linkas the stud is received within the slot to allow movement of the lockinglever and locking bar to sash-locking position.

7. A window structure of the awning type comprising a window framechannel, a trackway formed within said channel and extending along thelength thereof, a slide bar mounted for reciprocable movement along saidtrackway, a sash bracket pivotally connected at one end to said slidebar, a link pivotally connected at one end to said channel and at theother end to said sash bracket, said link having a locking slot near theend adjacent said sash bracket, a locking bar mounted for reciprocablemovement along said trackway, the upper end of the locking bar beinglocated below the lower end of said slide bar, a locking stud providednear the upper end of said locking bar, a locking lever pivotallyconnected to said channel and secured to the lower end of said lockingbar for imparting reciprocable movement to the locking bar, and holdingmeans associated with said locking bar normally acting to preventmovement of the locking lever and locking bar to thereby maintain saidstud in position to be received within said slot, said holding meansbeing engaged by said link as the stud is received within the slot tocause said holding means to move to a position allowing movement of thelocking lever and locking bar to sash-locking position.

8. A window structure of the awning type comprising a window framechannel, a trackway formed within said channel and extending along thelength thereof, a slide bar mounted for reciprocable movement along saidtrackway, a sash bracket pivotally connected at one end to said slidebar, a link pivotally connected at one end to said channel and at theother end to said sash bracket,

said link having a locking slot near the end adjacent said sash bracket,alocking bar mounted for reciprocable movement along said trackway, theupper end of the locking bar being located below the lower end of saidslide bar, a locking stud provided near the upper end of said lockingbar, a locking lever pivotally connected to said channel and secured tothe lower end of said locking bar for imparting reciprocable movement tothe locking bar, and a stud positioning plate rotatably mounted on saidlocking bar, said plate having a holding portion normally engaging anadjacent area of said channel to prevent movement of the locking leverand locking bar to thereby maintain said stud in position to be receivedwithin said slot, said plate having another portion engaged by said linkas the stud is received within the slot to cause said holding portion torotate to a position allowing movement of the locking lever and lockingbar to sash-locking position.

9. A Window structure of the awning type comprising a window framechannel, a trackway formed within said channel and extending along thelength thereof, a slide bar mounted for reciprocable movement along saidtrack- Way, a sash bracket pivotally connected at one end to said slidebar, a link pivotally connected at one end to said channel and at theother end to said sash bracket, said link having a locking slot near theend adjacent said sash bracket, a locking bar mounted for reciprocablemovement along said trackway, the upper end of the locking barbeinglocated below the lower end of said slide bar, a locking stud providednear the upper end of said locking bar, a locking lever pivotallyconnected to said channel and secured to the lower end of said lockingbar for imparting reciprocable movement to the locking bar, and a studpositioning plate, said plate having a holding portion on one side and alink-engaging portion on the other, said plate being so shaped andpivoted on said stud that the holding portion normally engages anadjacent area of said channel to prevent movement of the locking leverand locking bar to thereby maintain said stud in position to be receivedwithin said slot, engagement of the link with said linkengaging portioncausing said holding portion to rotate to a position allowing movementof the locking lever and locking bar to sash-locking position.

10. A Window structure of the awning type comprising a window framechannel, a trackway formed within said channel and extending along thelength thereof, a slide bar mounted for reciprocable movement along saidtrackway, a sash bracket pivotally connected at one end to said slidebar, a link pivotally connected at one end to said channel and at theother end to said sash bracket, said link having a locking slot near theend adjacent said sash bracket, a locking bar mounted for reciprocablemovement along said trackway, the upper end of the locking bar beinglocated below the lower end of said slide bar, a locking stud providednear the upper end of said locking bar, a locking lever pivotallyconnected to said channel and secured to the lower end of said lockingbar for imparting reciprocable movement to the locking bar, and a studpositioning plate, said plate having a toothed portion on one side and alaterally extending lug on the other, said plate being so shaped andpivoted on said stud that the toothed portion normally engages anadjacent area of said channel to prevent movement of the locking leverand locking bar to thereby maintain said stud in position to be receivedwithin said slot, engagement of the link with said lug causing saidtoothed portion to rotate to a position allowing movement of the lockinglever and locking bar to sash-locking position.

ii. A window structure as set forth in claim 6, wherein a second sashbracket is pivotally connected at one end to said slide bar, and asecond link is pivotally connected to said channel and the second sashbracket, the second link being provided with a locking slot near the endadjacent the second sash bracket for cooperation with a second lockingstud secured to the slide bar.

12. A window structure as set forth in claim 7, wherein a second sashbracket is pivotally connected at one end to said slide bar and a secondlink is pivotally con nected to said channel and the second sashbracket, the second link being provided with a locking slot near the endadjacent the second sash bracket for cooperation with a second lockingstud secured to the slide bar.

13. A window structure as set forth in claim 8, wherein a second sashbracket is pivotally connected at one end to said slide'bar, and asecond link is pivotally connected to said channel and the second sashbracket, the second link being provided with a locking slot near the endadjacent the second sash bracket tor cooperation with a second lockingstud secured to the slide bar.

14. A window structure as set forth in claim 9, wherein a second sashbracket is pivotally connected at one end to said slide bar, and asecond link is pivotally connected to said channel and the second sashbracket, the second link being provided with a locking slot near the endadjacent the second sash bracket for cooperation with a second lockingstud secured to the slide bar.

15. A window structure as set forth in claim 10, wherein a second sashbracket is pivotally connected at one end to said slide bar, and asecond link is pivotally connected to said channel and the second sashbracket, the second link being provided with a locking slot near the endadjacent the second sash bracket for cooperation with a second lockingstud secured to the slide bar.

No references cited.

